Attachment for plateless engraving machines



Feb. 14, 1928. 1,659,243

J. C. COON ATTACHMENT FOR PLATELESS ENGRAVING MACHINES Filed Feb. 20, 1925 amea GU00.

Patented Feb. 14, 1928.

UNITED STATES 1,659,243 PATENT OFFICE.

JAMES C. GOON, 0F BROOKLYN, NEW YORK, ASSIGNOR TO TI-IE COONWAY MACHINE COMPANY INCORPORATED, OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

ATTACHMENT FOB FLATELESS ENGRAVING MACHINES.

Application filed February. 20, 1925. Serial No. 1G,50S.

This invention relates to the art of so called plateless engraving or embossing in which it is the practice to create raised letters by means of treating ordinary type printing while the ink is still wet with a special substance generally in the form of a powder and then heating the print in a special machine. The great majority of machines on the market perform the last named function only, so that the printed sheets or cards must be sprinkled by hand with the powder, then the excess powder shook off and finally thecards fed into the heater. I

The principal object of the invention 1s to provide an attachment for existing heaters of the type specified which will automatically apply the powder,remove the eX- cess and feed'the work to the heater.

Referring to the drawings in which what I now consider the preferred form of my in vention is shown,

Fig. 1 is a vertical'section through the attachment, showing how it is attached to the,

heater.

Fig. 2 is an end elevation of the same.

Fig. 3 is a detail view of a portion of a container for the powder.

Fig. 1 is a sectional view of the shaker or distributor for the powder.

Fig. 5 is a side view of the blower for removing the excess powder.

A portion of a typical plateless engraving machine or heater is shown at 1. Said machines usually have a traveling belt2 on which the printed sheets or cards are carried into the machine. Said belt is shown as passing; around a roller 3 which is rotated by means not shown. From a pulley 1 on said roller, I drive a similar roller 5 on my improved attachment through means such as a belt 6 and pulley 7 Around said roller, I pass a perforated or open work belt which may take the form of an open wire, mesh or chain. Said belt passes over a sec ond roller 9.

Above the belt I mount one or more containers 10, 11 and 12 for the powder to be sprinkled on the print. Said containers are shown in the form of cans, each having a vertical shaft 13 journaled in a bracket 1 1 adjacent the top of the can and also journaled at the bottom. On each of said shafts is a paddle 15 designed to stir or agitate the powder continuously, cause uniform.

from the can. Said shafts are shown as rotated from a cross shaft 16 journaled in brackets 17 by means of bevel gears 18 and 19. Shaft 16 maybe rotated by any suitable means, such as by a pulley 20 mounted thereon, driven by a belt 21 from a motor 22 or other source of power.

At their bottoms the cans are provided with a plurality of apertures 10, 11' and 12, and also preferably with an adjustable disc or plate 40 having an annular slot 41 therein. Said disc is turned by a handle 42 to uncover more or less of apertures 10, 11' and 12 by bringing more or less of slot 41 under the same. By this or equivalent means the amount of powder escaping from the cans may be regulated to a nicety. From the cans the powder drops into a distributor or sieve 23 in the form of an elongated trough having inclined side walls24 and 25 and perforated bottom 26. Said distributor is agitated by means such as one or more levers 27, 28 pivoted on the framework at 29 and linked at their tops to the distributor and at their bottoms to links 80, 31 connected to crankshaft 32 shown as driven from motor 22 by belt 38. From the distributor, the powder drops directly on the work 34 on belt 35. Between this point and the heater, I place a device for removing the excess powder from the work. Said device is of such a form as not to disturb the paper or cards being printed. Preferably I provide a blower 36 having. a tube 37 extending therefrom over. the belt and provided with a plurality of perforations 38 so placed as to blow the air downwardly and backwardly against the travel of the work. The powder thus removed,

falls through the open meshes of belt 6 and into container 39 from which it may be replaced in the cans.

From the foregoing, the operation of my thetravoling belt of the heater 1 where the print is heated and the rosin melted and dried to create the so-called plateless engraving. The rate of deposit of the powder 5w may be readily regulated by the handle r-2 and the distribution of the powder may be equalized by adjusting the handle 42 on the several cams. It will readily be seen that the employment otmy attachment will not only perform autonmtically what has heretofore been done by hand but will be able to perform the operation in a much more rapid rate and much more eii'ectirely than has heretofore been done by hand.

In accordance with the provisions of the patent statutes, I have herein described the principle and operation of my invention. together with the ap iaratus which I now con sider to represent the best embodin'ient there of, but I desire to have it understood. that'the apparatus shown is only illustrative and that theiinvention canbe carried out by other .means. Also, while it is desigued to use the various features and elen'ients in the combillittlOlT and relations described, some ot these may be alteredand others on'iitted without interfering with the more general results outlined, and the invention extends to such ase.

Having described my invention, what I claim and desireto secure by Letters Patent is:

1. A-n attachmentfor plateless engraving :heating machines, comprising a traveling belt, means for revolving the same, a container for the print powder above the. same from which the powder flows, an oscillatory distributing member-between the container and belt, and a blowei betwecn the said mem- -1u her and the delivery end of said belt for blowing theexcess powder from the paper before it enters the heating machine.

i-An attachment for plateless engraving heating machines, comprising a traveling -.perforated belt, means for revolving the same,- acontainer for the print powder above the same having apertures in the bot-tom thereof, anosoillatory sieve-like memlier be-. tween the container and belt, a blower be- -tween the saidmemb and the delivery end of said belt for blowing the excess powder .from the paper before it enters the heating machine and a catch pan under said belt tor catching said excess powder.

An attachment For plateless engraving heating machines. comprising a traveling belt, meanstor revolving the same, a perforated container for the print powder, means for agitating the powder therein, means on said-container for varying the rate of liow of the powder therefrom, an oscillatory mem- ;.berbetween the containers andbelt, and a blower between the sald member and the. de-

livery end of said belt for blowing the excess powder from the paper before it enters the heating machine.

at. An atlaclnnent for platcless engraving heatin machines, comprisi 11g a traveling perforated belt, a container for the print powder above the same, a sieve between the container and belt, a blower having an outlet member extending across said belt provided with a plurality of dowiiwardly facing apee tures, said member being located between the said member and the delivery end of said belt for blowing the excess powder from the paper before it enters the heating machine, and a catch pan under said belt for catching said excess powder.

A powdering attachment for printing or engraving machines, comprising a traveling belt, means for revolving the same, a container for the powder above the same, means for agitating the powder in said container, an oscillatory sieve ltietwetul the container and belt, and a blower between the said member and the delivery end of said bollTlor blowing the excess powderlrom thepape-r before itleaves the machine.

6. A powdering attachment :l'oiw printing machines or the like, comprising a; traveling belt, means l'or revolving the same, acoutainer for the print powder above the same, means for agitating the powder in said coir tainer, an oscillatory member between the container and belt, a blower between the said n'iember and the delivery end of said belt for blowing the excess powder from the papeig and a common means for driving said agitating means and oscillatijiry meml'ier.

7. A.powdering--attachment for printing! machines or the like, comprising a traveling belt, means for revolving the same, a pcl'l'orated container for the powder, means for uniformly distributing the iiow oi the pea der therefrom, and a blowet having an outlet member extending across said belt and pro 'vided with a plurality of apertures adapted to direct the air dowuwa rdly and against the travel of the belt, said meihberheing located between the said member and the delivery end of saidbelt for blowing the excess powder from the paper.

8. A11 attacl'nnent {or plateless engraving machines comprising a traveling belt, means for sprinli'ling powder on the worlc on said belt, and means for blowing oil excess powder including a pipe t-Xl'QIHlltlgf acrossihe belt and provided with a plurality bl: apertures adapted-to direct the air generally downwardly and against the travel of the work.

In testimony whercotl have zitlisedun v signature.

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